Home / 142,976.77-197,331.59-79,335.07

Finding the Fourth Proportional to 142,976.77, 197,331.59 and 79,335.07

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Solution

The fourth proportional to 142,976.77, 197,331.59 and 79,335.07 is: 109,495.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,976.77 : 197,331.59 = 79,335.07 : x
  2. Step 2: Convert to fraction form
    142,976.77/197,331.59 = 79,335.07/x
  3. Step 3: Cross multiply
    142,976.77x = 197,331.59 × 79,335.07
  4. Step 4: Simplify right side
    142,976.77x = 15,655,315,210.87
  5. Step 5: Solve for x
    x = 15,655,315,210.87/142,976.77
  6. Step 6: Final answer
    x = 109,495.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.